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Augmentative Bubble Condensation

IP.com Disclosure Number: IPCOM000091863D
Original Publication Date: 1968-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Carpenter, LC: AUTHOR [+2]

Abstract

In a multifluid boiling system the heat generating components 12 are immersed in primary fluid 14 which is a low-boiling temperature fluid such as one of the new fluorocarbons. Secondary fluid 16, which is less dense than fluid 14 and which is immisicible with it, is superimposed on fluid 14 so that interface 18 is formed between them. Fluid 16 is maintained at a lower temperature than fluid 14 so that vapor bubbles 22 generated at the electronic components immersed in fluid 14 condense at interface 18. However, as the heat generated in components 12 to be cooled is increased, the number of vapor bubbles increases. Some of these bubbles combine at interface 18 into larger bubbles 24 which rise into fluid 16.

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Augmentative Bubble Condensation

In a multifluid boiling system the heat generating components 12 are immersed in primary fluid 14 which is a low-boiling temperature fluid such as one of the new fluorocarbons. Secondary fluid 16, which is less dense than fluid 14 and which is immisicible with it, is superimposed on fluid 14 so that interface 18 is formed between them. Fluid 16 is maintained at a lower temperature than fluid 14 so that vapor bubbles 22 generated at the electronic components immersed in fluid 14 condense at interface 18. However, as the heat generated in components 12 to be cooled is increased, the number of vapor bubbles increases. Some of these bubbles combine at interface 18 into larger bubbles 24 which rise into fluid 16. In high heat applications, many of the bubbles reach the surface of fluid 16 and vaporize into the atmosphere or, in the case of a spillage system, are carried away in the overflow.

Screen 26, placed in fluid 16, intercepts bubbles 24 rising through it. The surface tension of the fluid, set up between the strands in the screen web, is sufficient to keep the bubbles from passing through it. Bubbles 24 stopped at screen 26, condense in the cooler fluid 16. The condensed vapor or droplets 28 of fluid 14 descend in fluid 16 to fluid 14 because of their greatest density. Thus, loss of fluid 14, because of condensation into the atmosphere or the carrying away of bubbles 24 due to spillage, is positively prevented.

Screen 26 can be l...